# Prepare Liquidity

Before subscribing to an on-chain fund via Fume, investors need to ensure that they have sufficient liquidity in their wallets. Most fund managers choose a stablecoin, such as **USDC (from Circle)** or **USDT (Tether)**, as the base currency for the fund. The key requirement is that the liquidity must be available on the **correct blockchain network** where the fund is deployed (e.g., Ethereum or Arbitrum).

## **Option 1. Buy Liquidity from an Exchange**

The easiest way to prepare liquidity is by purchasing stablecoins (e.g., USDT or USDC) directly from a centralized exchange such as Coinbase, Binance, or Kraken. After purchasing, withdraw the stablecoins to your wallet on the **correct network**. This method is simple and requires a low level of technical expertise.

* Ensure you select the correct network (e.g., **Arbitrum** or **Ethereum**) during the withdrawal process to match the fund’s deployment chain.

### Example - Kraken and Metamask on Arbritrum One 

Let’s walk through an example where:

* The fund is deployed on **Arbitrum One**.
* The stablecoin used for the fund is **USDC**.
* The exchange used to buy USDC is **Kraken**.
* The wallet used for interacting with Fume is **Metamask**.

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#### **Buy or Deposit USDC on Kraken**

* **Log in** to your **Kraken** account.
* If you don't have USDC already, go to the **Buy Crypto** section and purchase the necessary amount of **USDC**. If you already have USDC in your Kraken account, you can skip this step.
* Alternatively, if you need to deposit USDC from another source into Kraken, use the **Deposit** feature in Kraken to fund your account.

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#### **Withdraw USDC to Metamask on Arbitrum One**

* Navigate to the **Transfer** section in Kraken.
* **Select Withdraw, then USDC** as the asset to withdraw.
* In the **Network** options, **choose Arbitrum One** as the chain to withdraw your USDC.
* Open **Metamask** and switch the network to **Arbitrum One** (you can do this by clicking the network dropdown at the top-left of the Metamask interface).
* **Copy your Metamask wallet address** (on the Arbitrum One network) and paste it into the **withdrawal address field** on Kraken.
* Confirm the withdrawal address by email if it's a new wallet and submit the transaction.

Kraken will now send your USDC to your Metamask wallet on the **Arbitrum One** network. Once the transaction is confirmed, you will see your USDC in your Metamask wallet.
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#### **Ensure You Have some ETH for Gas Fees**

To interact with the Fume platform and complete the investment, you will need a small amount of **ETH** in your Metamask wallet to cover transaction ([gas](https://www.investopedia.com/terms/g/gas-ethereum.asp)) fees on the **Arbitrum One** network.

If you don't have any ETH on **Arbitrum One**, follow these steps:

* On **Kraken**, go to the **Buy Crypto** section and purchase a small amount of **ETH**—around **0.002 ETH** should be sufficient for basic transactions.
* Go to the **Withdraw** section and select **ETH**.
* In the withdrawal options, choose **Arbitrum One** as the network.
* **Paste your Metamask wallet address** (the same one you used for USDC).
* Submit the transaction, and once confirmed, you will have the ETH in your Metamask wallet to cover gas fees.

Now that you have both **USDC** and **ETH** in your Metamask wallet on the **Arbitrum One** network, you are ready to invest in the on-chain fund via Fume.
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{% content-ref url="inflows/on-chain-subscriptions" %}
[on-chain-subscriptions](https://docs.fume.finance/user-guides/inflows/on-chain-subscriptions)
{% endcontent-ref %}

## **Option 2. Bridge Liquidity Across Networks**

If you already have liquidity in your wallet but on the **wrong network**, you can use a **bridge** to transfer the funds to the correct one.

* **Built-in Swaps**: Some wallet apps offer a built-in swap or bridge function that allows you to easily move assets between networks.
* **Native Bridges**: Alternatively, you can connect to a native blockchain bridge like [**Arbitrum Bridge**](https://bridge.arbitrum.io/?destinationChain=arbitrum-one\&sourceChain=ethereum) to transfer your stablecoins to the correct network.

### Recommended Approach:

For most investors, the most straightforward way is to purchase stablecoins from a centralized exchange and withdraw them directly to your wallet on the target network. This minimizes the risk of errors and ensures that your liquidity is available for a seamless subscription process.